Figure 6.
ROC curves. ROC for day 4 (●) and day 11 (○) posttherapy. Lesions were identified as responders or nonresponders, and the changes in ADCw were rank-ordered. At each value of percent change in ADCw, the numbers of responders at higher values were classified as true positives (TP) and the number of nonresponders were false positives (FP). At all lower values, the numbers of nonresponders at lower values were true negatives (TN) and the numbers of responders were false negatives (FN). The areas under the curve for each analysis were 0.84 on day 4 and 0.91 on day 11.